Jeff Clark @JeffClarkUS
This is the reason why Club of Rome predictions re the world running out of resources are wrong. Markets send conse… https://t.co/jvsNiZxtD6 — PolitiTweet.org
HumanProgress.org @HumanProgress
The United States uses less gold, steel, aluminum, copper, stone, cement, and paper than it did at the start of thi… https://t.co/wMbO5thli0